#include "apue.h"
char *env_init[] = {"USER=unknown", "PATH=/tmp", NULL};
int main(void) {
	pid_t pid;
	if ((pid = fork()) < 0) {
		err_sys("fork error");
	} else if (pid == 0) {
		if (execle("/home/a.out", "echoall", "myargl",
					"MY ARG2", (char *)0, env_init) < 0)
			err_sys("execle error");
	}

	if (waitpid(pid, NULL, 0) < 0)
		err_sys("wait error");

	if ((pid = fork()) < 0) {
		err_sys("wait error");
	} else if (pid == 0) {
		if (execlp("ls", "echoall", "only 1 arg", (char *)0) < 0)
			err_sys("execlp error");
	}

	exit(0);
}
